-0.5 0.25      0.0 1.0      1.0 1.0 1.0 1.0
0.5 0.25       1.0 1.0      1.0 1.0 1.0 1.0
0.5 -0.25      1.0 0.0      1.0 1.0 1.0 1.0

-0.5 0.25      0.0 1.0      1.0 1.0 1.0 1.0
0.5 -0.25      1.0 0.0      1.0 1.0 1.0 1.0
-0.5 -0.25     0.0 0.0      1.0 1.0 1.0 1.0
